 | | Journal (article/letter/editorial) | | composition and struc tural features of supergene manganese oxides. As an example, one can cite lithiophorite...Under the name elizavetinskite-lithiophorite, a manganese mineral has been described from Stanislavova,...Li2O [ 3 3 ] . Lithiophorite from the Sungarsk deposit, Salair, studied by P. F. Andrushenko (unpublished...Li2O and 26.0% A1 2 O 3 . A manganese mineral from the Schneeberg deposit, Saxony, was first described...O 3 ) ] [ 1 3 , 1 8 ] . Mikheyev [3] found a manganese mineral named elizavetinskite (elizavetite), with |  | | Catalog/List | | Internet, Fax, and Mail) Heritage Auctions Design District Annex 1518 Slocum Street • Dallas, TX 75207 Sunday...52001-52306 LOT VIEWING Heritage Auctions Design District Annex 1518 Slocum Street • Dallas, TX 75207 Wednesday...A world-class Manganite from Ilfeld in the Harz Mountains of Germany, with crystals up to 1.88 inches...namesake for Heulandite - who was born in Bayreuth, Germany in 1778. Since he died in 1856, it is clear that...FLUORITE Dal’negorsk Tetyuche, Kavalerovo Mining District, Primorskiy Kray, Far-Eastern Region, Russia It |  | Tumiati, Simone, Merlini, Marco, Godard, Gaston, Hanfland, Michael, Fumagalli, Patrizia (2020) Orthovanadate wakefieldite-(Ce) in symplectites replacing vanadium-bearing omphacite in the ultra-oxidized manganese deposit of Praborna (Aosta Valley, Western Italian Alps). American Mineralogist, 105 (8). 1242-1253 doi:10.2138/am-2020-7219 | Journal (article/letter/editorial) | | vanadium-bearing omphacite in the ultra-oxidized manganese deposit of Praborna (Aosta Valley, Western Italian...found instead. Keywords: Vanadate, wakefieldite, manganese, Alps Introduction Rare-earth (REE) orthovanadates...from the manganese and iron Glücksstern Mine associated with hausmannite Mn2+Mn3+ 2 O4 (Thuringia, Germany)...Arase stratiform hematite-bearing ferromanganese deposit (Kochi prefecture, Japan) (Moriyama et al. 2011)...has also been reported in low-grade obducted manganese-rich radiolarites covering the Ligurian 1242 |  | Santos, Felipe Holanda dos, Amaral, Wagner da Silva, Konhauser, Kurt, Martins, Douglas Teixeira, Castro, Marco Paulo de, Queiroga, Glaucia Nascimento, Chi Fru, Ernest, Andersen, Morten B. (2021) Unraveling sedimentary precursors and metal enrichment of high-grade metamorphosed manganese-rich rocks from the Borborema Province, northeastern Brazil. Ore Geology Reviews, 137. 104283pp. doi:10.1016/j.oregeorev.2021.104283 | Journal (article/letter/editorial) | | metal enrichment of high-grade metamorphosed manganese-rich rocks from the Borborema Province, northeastern...Keywords: Paleoproterozoic Borborema Province Manganese ore Sedimentary protolith Anoxic sediments Amphibolite...conditions The Paleoproterozoic Lagoa do Riacho manganese deposit in the Borborema Province is central to unravelling...unravelling the genesis of Paleoproterozoic manganese deposits, Paleoproterozoic redox evolution and genetic...African Craton. With manganese contents averaging 35 wt%, the Lagoa do Riacho manganese unit is lithologically |  | | Journal (article/letter/editorial) | | developed large sized crystals coexist with spessartine in Mn-silicate facies rocks. In contrast, the...higher fo2 conditions. KEYWORDS" pyrophanite, manganese deposits, hematite, Gangpur Group, India. Introduction...facies. The Gangpur Group is well known for its manganese-rich ore bodies that are interstratified with...enriched the manganese concentration and formed these units into workable deposits. The manganese-rich rocks...rocks of Goriajhar, Sundargarh district, Orissa, have so far been considered as Mn-silicate rocks or gondites |  | Cabral, Alexandre Raphael, Zeh, Armin, Viana, Nívea Cristina da Silva, de Castro, Marco Paulo, Laufek, František, Lehmann, Bernd, Queiroga, Gláucia (2019) Alabandite (MnS) in metamorphosed manganiferous rocks at Morro da Mina, Brazil: palaeoenvironmental significance. European Journal of Mineralogy, 31 (5) 973-982 doi:10.1127/ejm/2019/0031-2879 | Journal (article/letter/editorial) | | Adenauerring 20b, Geb. 50.40, 76131 Karlsruhe, Germany 4 Vale Manganês S.A., Rua Duque de Caxias s/n,...Adolph-Roemer-Str. 2a, 38678 Clausthal-Zellerfeld, Germany Abstract: The mineral alabandite, cubic MnS with...metasedimentary rocks, some of which are mined as manganese ore. One of them is Morro da Mina, Mina Gerais...alabandite is a minor component of “queluzite”, a manganese-silicate–carbonate rock. The Morro da Mina alabandite...rhodochrosite. The different assemblages suggest that manganese sulfide formed in a range of marine palaeoenvironments |  | | Journal (article/letter/editorial) | | thesemineralscould and coronaditeare the most abundant manganese bepositively determined onlyif goodcrystals or...Survey. 83 84 D. F. HEWETT of supergeneorigin (Ilfeld, Ge' oxides during diagenesis.Less commonlyand...(Fig. 5); and the vein depositsof the Batesville district, Arkansas, it very uncommon. To this writer's...Mississippian, but most of the concentrations of manganese oxide mineralslie in the FernvaleLimestoneand...Limestonepersis- tentlycontainsseveralpercentof manganese andthe CasonShalecontainsenoughmanganese in the |  | | Journal (article/letter/editorial) | | pp. 612–634. Manganese Deposits: Communication 2. Major Epochs and Phases of Manganese Accumulation in...later than the end of the Middle Archean. Primary manganese sediments were accumulated at that time in shallow...reach economic values. The formation of genuine manganese ores is related to later processes of the transformation...basins of manganese ore sedimentation and character of processes of the formation of manganese sediments...paleocontinents. Major periods, epochs, and phases of manganese ore genesis are defined. At the early stages of |  | | Journal (article/letter/editorial) | | and genesis of the Paleoproterozoic Birimian manganese-formation of Nsuta/Ghana Received: 18 April 1997...1997 / Accepted: 16 July 1998 Abstract The manganese deposit of Nsuta, in the Ashanti Belt of Southern...with the orebody. The orebody is a carbonatetype manganese-formation and in terms of origin is considered...mineral assemblage forms the protore of the Nsuta deposit. Opaque Mn4+Editorial handling: DR A. MuÈcke (&)...Èt, Goldschmidtstrasse 1, D-37077 GoÈttingen, Germany K. Dzigbodi-Adjimah Institute of Mining and Mineral |  | | Journal (article/letter/editorial) | | gem-quality rhodonite in one of the traditional manganese ore districts of Minas Gerais, Brazil, prompted...yellow, and gray; it is commonly stained black by manganese oxides. It is transparent to translucent and displays...the formula CaMn4Si5O15, as already mentioned. Manganese is the dominant cation in most samples with magnesium...rare species such as calcite, rhodochrosite, spessartine, magnetite, willemite, franklinite, alleghanyite...Rhodonite has been collected at the Berkshire manganese prospect, Franklin County; at Coventry and Irasburgh |  | | Report (issue) | | permission of Christian Weise Verlag, Munich, Germany German Edition Isaias Casanova, a fan of the...Scovil photo © Christian Weise Verlag, Munich, Germany ISBN 3-921656-35-4 Printed in the United States...to this series Facing page: Faceted pyrope-spessartine from Kenya 99.5 carats Houston Museum of Natural...stone was cut by Bernd Cullman of Idar Oberstein, Germany. Aside from being a master lapidary, Cullman won...KOURlMSKY AND JAROSLAV HYR�L Classic Garnets: Spessartine BY GLORIA STAEBLER, DUDLEY BLAUWET GARY ZITO |  | Chisonga, B.C., Gutzmer, J., Beukes, N.J., Huizenga, J.M. (2012) Nature and origin of the protolith succession to the Paleoproterozoic Serra do Navio manganese deposit, Amapa Province, Brazil. Ore Geology Reviews, 47. 59-76 doi:10.1016/j.oregeorev.2011.06.006 | Journal (article/letter/editorial) | | succession to the Paleoproterozoic Serra do Navio manganese deposit, Amapa Province, Brazil B.C. Chisonga a, b...Bergakademie Freiberg, 09596 Freiberg, Saxony, Germany d Department of Geology, North-West University...online 24 June 2011 Keywords: Serra do Navio manganese deposit Brazil Lithogeochemistry Metamorphic petrology...Until its closure in 1997, the Serra do Navio deposit, located in Amapá Province, Brazil, was one of...sources of high-grade manganese ore to the North American market. The high-grade manganese oxide ores were |  | | Journal (article/letter/editorial) | | Minerals of the Hutter Mine A New Manganese-Barium Mineral Locality in Northern Pittsylvania County,...exposed a small dump composed almost entirely of manganese-rich rocks. Minerals found in this dump include...alleghanyite), manganese oxides and spinels (manganosite, hausmannite, galaxite-jacobsite, manganese-rich magnetite... a manganese pyroxenoid (probably rhodonite), manganese-rich sphalerite, alabandite, spessartine garnet...garnet, barium-manganese mica (kinoshitalite), and barite. Several of these minerals are previ ously unknown |  | Dekoninck, Augustin, Monié, Patrick, Blockmans, Sabine, Hatert, Frédéric, Rochez, Gaëtan, Yans, Johan (2019) Genesis and 40Ar/39Ar dating of K-Mn oxides from the Stavelot Massif (Ardenne, Belgium): Insights into Oligocene to Pliocene weathering periods in Western Europe. Ore Geology Reviews, 115. 103191 doi:10.1016/j.oregeorev.2019.103191 | Journal (article/letter/editorial) | | Belgium b c ARTICLE INFO ABSTRACT Keywords: Manganese deposit Ardenne Stavelot-Venn Massif K-Mn oxide Weathering...assemblages (mainly rhodochrosite and/or kutnohorite, spessartine, muscovite, chloritoïd, andalusite, hematite)...Mn, from which Mn oxides have precipitated. Spessartine and other Mn-silicates have poorly contributed...weathering-type deposit in the Salmchâteau area and a carbonate-hosted sedimentary deposit in the Chevron...ferruginous conglomerates and breccias (chanel deposit), (iv) carbonate replacement ores, and (v) limonitic |  | | Journal (article/letter/editorial) | | Brandsnuten Manganese Deposit, Tokke, Norway Dirk van der Wei ABSTRACT Brandsnuten manganese deposit in western...western Telemark is interpreted as a synsedimentary deposit related to volcanic exhalations. It is embedded...identified manganese oxide-, silicate- and carbonate minerals. Rhodonite, braunite and spessartine are the...investigated from the deposit. INTRODUCTION The Brandsnuten manganese deposit is located in the mountainous...studies. The first notice of the Brandsnuten manganese deposit was by Scheerer (1845b) where it is mentioned |  | | Journal (article/letter/editorial) | | Petrological signi®cance of manganese carbonate inclusions in spessartine garnet and relation to the stability...stability of spessartine in metamorphosed manganese-rich rocks Received: 26 July 2000 / Accepted: 7...Idioblastic spessartine garnet pervasively developed in Mn-rich rocks and impure manganese carbonate ore...ore at the Lower Proterozoic Nsuta manganese deposit, Western Ghana, contains abundant inclusions of...strongly fractionate Ca and Mg over coexisting spessartine. The nature, composition and textural relationship |  | | Journal (article/letter/editorial) | | greenstone belts: evidence from gondites and related manganese-bearing rocks from northern Ghana* FRANKMELCHER...northern Ghana host several types of metamorphosed manganese-bearing rocks. Differences in the mineralogy and...volcanic-volcaniclastic depositional environment. Manganese oxide-bearing phyllite, which is enriched in transition...deeper basin, manganese silicate-rich gondites occur. These consist either of spessartine + quartz + ilmenite...ilmenite, or of spessartine + quartz + Mn amphiboles __+ rhodonite __+ hyalophane __+ Mn stilpnomelane |  | Munteanu, Marian, Marincea, Stefan, Kasper, Haino Uwe, Zak, Karel, Alexe, Veronica, Trandafir, Vasile, Saptefrati, George, Mihalache, Angela (2004) Black chert-hosted manganese deposits from the Bistritei Mountains, Eastern Carpathians (Romania): petrography, genesis and metamorphic evolution. Ore Geology Reviews, 24 (1) 45-65 doi:10.1016/j.oregeorev.2003.08.004 | Journal (article/letter/editorial) | | elsevier.com/locate/oregeorev Black chert-hosted manganese deposits from the Bistritei Mountains, Eastern...Geologisches Institut, Universität zu Köln, Germany d Czech Geological Survey, Prague, Czech Republic...Moldovenesc, Romania Abstract The East Carpathian manganese deposits (ECMD) occur in the Tulghes Group, a...silicate orebodies (Fe-rhodochrosite, Mn-amphibole, spessartine, stilpnomelane, rhodonite, pyroxmangite and tephroite)...anomalies on chondrite-normalized plots. The manganese was supplied by both terrigenous and igneous sources |  | | Journal (article/letter/editorial) | | (1987) Genesis and diagenesis of the Cambrian manganese deposits, Harlech, North Wales M. A. Bennett Department...Sciences, University of Leeds, Leeds LS2 9JT, U.K. Manganese mineralization occurs throughout the greywackes...Gamlan Formation where it forms coticules (quartz-spessartine metapelites). Low-grade mineralization also occurs...The mineralization is syngenetic/syndiagenetic. Manganese was probably supplied to the basin by submarine...diagenetic remobilization of manganese oxides, precipitation of manganese carbonates, and replacement |  | | Journal (article/letter/editorial) | | by Brusnitsyn, Zhukov. The South Faizuly Manganese Deposit in the Southern Urals: Geology, Petrography...June 2, 2003 Abstract—The South Faizuly manganese deposit hosted in cherty rocks of the Magnitogorsk...and cherty siltstones) are characterized. The deposit was formed in the following four consecutive stages:...supergene alteration and partial denudation of the deposit in the Mesozoic–Quaternary. Models of Mn-bearing...considered. INTRODUCTION The South Faizuly manganese deposit is situated in eastern Bashkyrtostan 20 km |  | | Journal (article/letter/editorial) | | The fine-grained rocks of this deposit contain a treasure of rare, if microscopic, man ganese minerals...including three new species. The Bald Knob Manganese Deposit ALLEGHANY COUNTY, NORTH CAROLINA W I L L...source of three new minerals and six other rare manganese minerals (Table 1). The de posit is located about...Knob which is just southeast of Bald Knob. The deposit was originally described by Ross and Kerr in 1932...galaxite and alleghanyite. A reexamination of the deposit by Peacor et al. (1974) and Simmons et al. (1981) |  | | Journal (article/letter/editorial) | | MINERALIUM DEPOSITA © by Springer-Verlag 1979 Manganese HaloesSurrounding Metamorphic Stratabound Base...Montan-Universit~it Leoben, Austria Primary manganese haloes "survive" medium to high-grade regional...compositions vary considerably and include pure spessartine (40 % MnO). Compositional inhomogeneities (zoning)...these environments. I. INTRODUCTION Primary manganese haloes have, for some time, been documented as...6 x 105t Cu, 0,8 x 105t Pb) are surrounded by manganese haloes extending over a radius of i0 km from the |  | | Journal (article/letter/editorial) | | RESOURCE GEOLOGY, vol. 48, no. 1, 13–22, 1998 Spessartine Garnets in a Manganiferous Carbonate Formation...Katsuo Kase** and Masahiro Yamamoto** Abstract: Manganese carbonate ore beds and host rock manganiferous...have resulted from localised processes in which manganese carbonates, in environments rich in alumino-silicate...studies indicate that the garnets are essentially spessartine (81.3 to 94.6%), with lesser amounts of almandine...the garnets are very spessartine-rich compared to garnets from other manganese deposits could be attributed |  | | Journal (article/letter/editorial) | | CERIUM ANOMALY IN SPESSARTINE GARNET FROM A BARITE-RICH ROCK, OTJOSONDU FERROMANGANESE DEPOSIT, NAMIBIA: THE...Adolph-Roemer-Str. 2A, D-38678 ClausthalZellerfeld, Germany e-mail: alexandre.cabral@tu-clausthal.de J.M....ABSTRACT Otjosondu, a Neoproterozoic ferromanganese deposit located about 130 km north-east of Okahandja, Namibia...barite and has end-member proportions as follows: spessartine (48 to 55 mol %), grossular (25 to 35 mol %)...abundance of barite and its coexistence with the spessartine-rich garnet suggest that Otjosondu may represent |  | | Journal (article/letter/editorial) | | County, Virginia, is a metamorphosed magnetite deposit, with substantial development of subsidiary manganoan...Paleozoic sillimanite-grade pelitic schists. Manganese oxides and spinels at the Hutter Mine include...temperatures, probably below 600 ∞C. INTRODUCTION Manganese-oxide minerals are important both economically...as petrogenetic indicators. The major ores of manganese are all oxides and hydroxides. Because Mn occurs... OCCURRENCE OF THE MN-RICH ROCKS Most of the manganese-rich rocks at the Hutter Mine were found in a |
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